20043425 has 12 divisors (see below), whose sum is σ = 26316396. Its totient is φ = 15091200.

The previous prime is 20043409. The next prime is 20043433. The reversal of 20043425 is 52434002.

It can be written as a sum of positive squares in 6 ways, for example, as 692224 + 19351201 = 832^2 + 4399^2 .

It is not a de Polignac number, because 20043425 - 2⁴ = 20043409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20043397 and 20043406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23156 + ... + 24005.

It is an arithmetic number, because the mean of its divisors is an integer number (2193033).

Almost surely, 2^20043425 is an apocalyptic number.

20043425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20043425 is a deficient number, since it is larger than the sum of its proper divisors (6272971).

20043425 is a wasteful number, since it uses less digits than its factorization.

20043425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47188 (or 47183 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20043425 is about 4476.9883850642. The cubic root of 20043425 is about 271.6380756207.

Adding to 20043425 its reverse (52434002), we get a palindrome (72477427).

The spelling of 20043425 in words is "twenty million, forty-three thousand, four hundred twenty-five".